NZ326023A

NZ326023A - Reduced respiratory irritation spray bleaching compositions containing a halogen bleach

Info

Publication number: NZ326023A
Application number: NZ326023A
Authority: NZ
Inventors: Marco Petri
Original assignee: Procter & Gamble
Priority date: 1995-12-07
Filing date: 1996-12-06
Publication date: 2000-02-28
Also published as: IL124741A0; TR199801026T2; CA2239992A1; ZA9610203B; BR9611905A; CN1207767A; EP0783036A1; WO1997020913A1; AU1329897A; KR19990071948A; MX9804589A; JPH11501976A; CZ174298A3

Abstract

A sprayable liquid composition packaged in a spray-type dispenser and comprising a halogen bleach and an organic or inorganic derived -NH2 compound which has the effect of reducing irritation of the respiratory system if spray droplets of the composition are inhaled when the composition is sprayed is claimed.

Description

<div class="application article clearfix" id="description"> New Zealand Paient Spedficaiion for Paient Number 326023 WO 97/20913 PCT7US96/19404 1 REDUCED RESPIRATORY IRRITATION SPRAY BLEACHING COMPOSITIONS Field of the Invention The present invention relates to a sprayable bleaching composition packaged in a container adapted to produce & spray The present invention is primarily but not exclusively applicable to the treatment of hard surfaces Background of the Invention Halogen bleaches, in particular hypochlorite, are known to be some of the most effective hygiene agents, especially at low concentrations, and are available in commercial quantities at acceptable cost Halogen bleaches provide a hygiene benefit against a wide range of microbes including bacteria, moulds, yeast and fungi Cleaning compositions have traditionally been delivered to surfaces by use of a earner such as a cloth or sponge onto which the composition is poured or which is dipped into a solution of the composition. This mode of application results in some wastage of the product due to absorbtion onto the cloth or sponge More recently, liquid products have been provided in a package adapted to produce a fine spray (aerosol) or jet of,the product to facilitate delivery to a surface Typical spray heads comprise a 5) single, relatively small, aperture to which product is fed by pump means operated by a trigger mechanism The deciding factors in determining whether a particular spray head will produce a mist or a jet include product properties, spray aperture geometry and spray pressure Known problems with sprays are the formation of airborne droplets which irritate the respiratory system of the user, either as a direct result of spraying a fine mist or due to the impact of a jet on a hard surface Consequently, in the, instructions for use of ccrtain products, especially those < J . Printed froiV/ Mimosa 1114 30 // I WO 97/20913 PCT/US96/19404 2 containing relatively high levels of halogen bleaches, the user is recommended not to spray the product directly onto a surface but rather to spray onto a cloth for subsequent application onto the surface Use of a ijoth or sponge ui this manner detracts from the convenience of using a spray ^ It is thus an object of the present invention to provide a sprayable composition comprising a halogen bleach, -which does not present the above mentioned problem of the lmtation of the respiratory system of the user, due to inhalation of airbone droplets Various solutions to this problem have been proposed in the art For instance, J62/28600 proposes the use of specific solvents, W094/24259 proposes the use of surfactants in combination with a specific design of the spray head of the package, EP 594 314 proposes the control viscosity by means of a selected surfactant in order to reduce the bleach odor, including in cases when airbone droplets are created while dispensing Finally, W095/07957 proposes the use of thickeners to control the size of irritant particles which are generated upon use oft sprayer n We have now found that the above object could be met by formulating a sprayable liquid composition which comprises a halogen bleach and which further comprises an effective amount of an organic or inorganic derived -NH2 compound Without wishing to be based by theory, it is (\ believed that the derived -NH2 compound does not prevent a formation or inhalation of airbone droplets, but that it reduces or eliminates the lmtatian that they cause Compositions comprising a halogen bleach and an inorganic derived -NH2 compound have already been described in the art, but not in the context of a sprayable composition, see for instance Japanese Kokai 63-108099, EP 119 560, BE 749 728, US 2,438,781, US 3,749,672, GB 2,078,522, EP 362 178, US 3,749,672 Summary of the Invention In a first embodiment, the present invention encompasses a composition comprising a halogen bleach and an organic or inorganic derived -NH2 compound, said composition being packaged in a spray type dispenser c In a second embodiment, the present invention encompasses a method for cleaning hard surfaces, said method comprising contacting by spraying a surface in need of cleaning with said composition. Printed from Mimosa 11 14 30 WO 97/20913 PCT/US96/19404 In a third embodiment, the present invention encompasses the use of an organic or inorganic derived -NH2 compound in a composition comprising a halogen bleach, to reduce irritation of the respiratory system when said composition is sprayed Detailed Description of the Invention The present invention provides compositions composing the following ingredients The bleach The present invention comprises halogen bleaching agents that are oxidative bleaches and subsequently lead to the formation of positive halide ion Common among these types of bleaches are the alkaline metal and alkaline earth metal hypochlorites, hypobronutes and hypoiodites although other bleaches that are organic based sources of halide, such as chloroisocyanurate, are also applicable Preferred bleach has the formula M(OX)y where M is a member selected from the group consisting of sodium, potassium, magnesium, calcium, and mixtures thereof, 0 is an oxygen atom, X is a member selected from the group consisting of chlonne, bromine, iodine, and mixtures thereof and y is 1 or 2 depending on the charge of M The preferred embodiment of the invention will effectively contain hypochlorite or hypochlorite and hypobromite The preferred hypohalite bleaches that comprise the present invention are sodium hypochlorite, potassium hypochlorite, calcium hypochlonte, magnesium hypochlorite, sodium hypobromite, potassium hypobromite, calcium hypobromite, magnesium hypobromite, sodium hypoiodite and potassium hypoiodite, more preferably sodium hypochlonte, potassium hypochlorite, calcium hypochlonte, magnesium hypochlonte, most preferably sodium hypochlonte A preferred organic-based bleach is chloroisocyanurate, however any organic halide that produces active halide ion is suitable for use in the present invention. The composiuons of the present invention preferably compnso bleach which is present at a level from about 0 01% to about 10%, preferably about 001% to about 2%, more preferably from about 0 1% to about 2%, most preferably from about 0 5% to about 2% by weight The -NH2 compound The compositions of the invention further comprise an organic and inorganic derived -NH2 compound, or mixtures thereof which are effective in reducing or eliminating the irntation of the respiratory system of the user, caused by inhalation of airborne droplets of said composition. Examples of such compounds are sulphamic acid, sulphamide, p-toluenesulphonamide, Printed from Mimosa 1114 30 WO 97/20913 PCT/US96/19404 4 imidodisulphonamide, benzenesulphonamide, melaoune, cyanamide, alkyl sulfonanudes, and mixtures thereof At pH levels of the present invention, which are greater than 11, the above mentioned compounds may be de-protonated, that is they may be in the form of a salt and therefore due to expediency, ease of synthesis or preparation, or due to formulation practices the salt form of any or all of the above mentioned compounds will suffice Although any suitable cation will suffice for the purposes of the present invention, sodium, potassium, lithium, nwsnpsium, calcium, and mixtures thereof are preferred ■< n The present invention comprises said -NH2 compounds in amounts such that the mole ratio of hypohalite bleach to malodor control agent is from about 10 1 to about 1 10, preferably from about 5 1 to about 1.2, more preferably from about 3 1 to about 1 2 According to the present invention, the compositions herein are packaged in a spray-type dispenser By spray-type dispenser, it is meant herein a dispenser which is able to dispense the composition it contains in the form of an array of fine airbone liquid droplets Such dispensers generate droplets of different sizes, and it is the smallest fraction which creates the irritancy issue referred to in ths background discussion hereinabove Suitable spray-type dispensers to be used according to the present invention include aerosols as well as manually operated foam trigger-type dispense*? sold for example by Specialty Packaging Products, Inc or Continental Sprayers, Inc These types of dispensers are disclosed, for instance, in US 4,701,311 to Dunmmng et al and US 4,646,973 and US 4,538,745 both to Focairaca Particularly preferred to be used herein are spray-type dispensers such as T8900® and T8500® commercially available from Continental Spray International or T8100® commercially available from Canyon, Northern Ireland In such a dispenser the liquid composition is divided in fine liquid droplets resulting in a spray that is directed onto the surface to be treated Indeed, in such a spray-type dispenser the composition contained in the body of said dispenser is directed through the spray-type head via energy communicated to a pumping mechanism by the user as said user activates said pumping / mechanism More particularly, in said spray-type dispenser head the composition is forced against an obstacle, e g. a gnd or a cone or the like, thereby providing shocks to help atomise the liquid composition, i.e to help the formation of liquid droplets Adiunct Materials Printed from Mimosa 11 14 30 WO 97/20913 PCT/US96/19404 5 The compositions herein can optionally include one or more other detergent adjunct materials or other materials for assisting or enhancing cleaning perfonnance, treatment of the surface to be cleaned, or to modify the aesthetics of the composition (e g. perfumes, colorants, dyes, etc ) The foDowing are illustrative examples of such adjunct materials but are not meant to be exclusive or limiting in scope Surfactant - The cleaning compositions contain from about 0 1% to about 95% by weight of a surfactant selected from the group consisting of anionic, nomomc, ampholyte and zwittenoruc surface active agents The surfactant is preferably present to the extent of from about 0 1% to 30% by weight of the composition Anionic surfactants can be broadly described as the water-soluble salts, parbcuMy the alkali metal salts, of organic sulfonation reaction products having ui their molecular structure an alkyl radical containing from about 8 to about 22 caibon atoms and a radical selected from the group consisting of sulfonic acid and sulfuric aad ester radicals (Included in the term alkyl is the alkyl portion of higher acyl radicals ) Important examples of the anionic synthetic detergents which can form the surfactant component of the composiuons of the present invention are the sodium or potassium alkyl sulfates, especially those obtained by sulfating the higher alcohols (Cg„ig carbon atoms) produced by reducing the glycendes of tallow or coconut oil, sodium or potassium alkyl benzene sulfonates, in which the alkyl group contains from about 9 to about IS carbon atoms, (the alkyl radical can be a straight or branched aliphatic chain), sodium alkyl glyceryl ether sulfonates, especially those ethers of the higher alcohols derived from tallow and coconut oil, sodium coconut oil fatty and monoglycende sulfates and sulfonates, sodium or potassium salts of sulfuric aad ester of the reaction product of one mole of a higher fatty alcohol (e g tallow or coconut alcohols) and about 1 to about 10 moles of ethylene oxide, sodium or potassium salts of alkyl phenol ethylene oxide ether sulfates with about 1 to about 10 units of ethylene oxide per molecule and in which the alkyl radicals contain from 8 to 12 carbon atoms, the reaction products of fatty acids are derived from coconut od sodium or potassium salts of fatty aad amides of a methyl taunde in which the fatty acids, for example, are derived from coconut oil and sodium or potassium beta-acetoxy- or beta-acetamido-alkanesulfonates where the alkane has from 8 to 22 carbon atoms Additionally, secondary alkyl sulfates may be used by the formulator exclusively or in conjunction with other surfactant materials and the following identifies and illustrates the differences between sulfated surfactants and otherwise conventional alkyl sulfate surfactants Non-limiting examples of such ingredients are as follows Printed from Mimosa 11 14 30 WO 97/?09I3 PCT/US96/19404 6 Conventional primary alkyl sulfates, such as those illustrated above, have the general formula R0S03-M+ wherein R is typically a linear Cg-C22 hydrocarbon group and M is a water solubtlizing cation Branched chain primary alkyl sulfate surfactants (i e, branched-chain "PAS") having 8-20 carbon atoms are also known, see, for example, Eur Pat Appl 439 316, Smith et al, filed January 21, 1991 Conventional secondary alkyl sulfate surfactants are those materials which have the sulfate moiety distributed randomly along the hydrocarbon "backbone" of the molecule Such materials may be depicted by the structure CH3(CH2)n(CH0S03-M^CH2)mCH3 wherein m and n are integers of 2 of greater and the sum of m+n is typically about 9 to 17, and M is a water-solubihzing cation. In addition, the selected secondary (2,3) alkyl sulfate surfactants used herein may comprise structures of formulas I and n CH3(CH2)x(CH0SO3-NC+)CK3 I CH3 (CH^CHOS 03 -M+)CH2CH3 n for the 2-sulfate and 3-sulfate, respectively Mixtures of the 2- and 3-sulfate can be used herein. In formulas 1 and n, x and (y+l) are, respectively, integers of al least about 6, and can range from about 7 to about 20, preferably from about 10 to about 16 M is a cation, such as an alkali metal, ammonium, alkanolunmonhim, tnethanol-ammonium, and the like, can also be used The aforementioned secondary alkyl sulfates are those prepared by the addition of H2S04 to olefins A typical synthesis using alpha olefins and sulfuric acid is disclosed in U S Pat No 3,234,258, Morris, issued February 8,1966 or in U.S Pat. No. 5,07S,041, Lutz, issued December 24,1991. The synthesis conducted in solvents which afford the secondary (2,3) alkyl sulfates on cooling, yields products which, when purified to remove the unreacted materials, randomly sulfated materials, unsulfated by-products such as CIO and higher alcohols, secondary olefin sulfonates, and the like, are typically 9(H-% pure mixtures of 2- and 3-sulfated materials (some sodium sulfate may be present) and are white, non tacky, apparently crystalline, solids Some 2,3-disulfates may also be present, but generally comprise no more than 5% of the mixture of secondary (2,3) alkyl mono-sulfates Such materials are available as under the name "DAN", e g "DAN 200" from Shell Oil Company it Buffers - Buffers can be included in the formulations herein for a variety of purposes One such purpose is to adjust the cleaning solution pH to optimize the hard surface cleaner composition effectiveness relative to a particular type of soil or stain Buffers may be included to stabilize the Printed from Mimosa 11 14 30 WO 97/20913 PCT/US96/19404 7 adjunct ingredients with respect to extended shelf life or for the purpose of maintaining compatibility between various aesthetic ingredients The hard surface cleaner of the present invention optionally contains buffers to adjust the pH in a preferred range above 11 Non-linuting examples of such suitable buffers are potassium carbonate, sodium carbonate, and trisodium phosphate, however, the formulator is not restricted to these examples or combinations thereof Chelating Agents - The cleaning compositions herein may also optionally contain one or more iron and/or manganese chelating agents Examples of such compatible chelating agents are ethane-l-hydroxy-1, 1-diphosphomc aad (EDHP) and dipicolimc aad Perfumes - Perfumes are an important ingredient especially for the liquid composition embodiment Perfume is usually used at levels of from 0% to 5% In U S Pat.No 4,246,129, Karcher, issued January 20, 1981 (incorporated herein by reference), certain perfume materials are disclosed which perform the added function reducing the solubility of anionic sulfonate and sulfate surfactants. Oth^r Adiunct Ingredients - As a preferred embodiment, the conventional adjunct ingredients employed herein can be selected from bleach stabilizers, pigment!), color speckles, suds boosters, suds suppressors, anti-tarnish and/or anti-corrosion agents, »oil-sus pending agents, germicides, alkalinity sources, hydrotropes, anti-oxidants, clay soil removal/anti-redeposinon agents, polymeric dispersing agents, etc Boosters - As a further optimal, but preferred ingredient, the present compositions comprise bleach boosters Bleach boosters are those compounds that in an alkaline pH environment are capable of releasing a halide ion, undergoing in oxidation, a reduction or other disproportionation that otherwise yields an activated halide ion Typically boosters containing bromine atoms and iodine atoms are used in the presence of chlorine atom based bleaches and iodine is used when bromine based bleaches are employed as the primary bleaching agent. Preferred bleach booster has the formula M(X)y where a) M is a member selected from the group consisting of lithium, sodium, potassium, magnesium, calcium, copper, zinc, and mixtures thereof, and b) X is the radical bromide, hypobromite, bromate, iodide, hypoiodite, and mixtures thereof, wherein y is 1 or 2 While not wishing to be limited by theory, it is believed that the boosters have the effect, as in1 the case of hypochlorite based bleach, ot converting the hypochlorite bleach into a more reactive and/or a more stable species, for example, hypobromite, thus providing for the full utility of the bleach formulated Bleach boosters of the present invention may be added as a precursor which itself can be a bleach booster, for example, iodide ion is a suitable bleach booster according to the 1/ Printed from Mimosa 1114 30 WO 97/20913 PCT/US96/19404 i) t 8 present invention but, the ratio of hypohalite and iodide can be adjusted by the formulation to provide for the m situ formation of lodate, a preferable bleach booster The boosters thus formed by ondation/reduction or other disproportionations, for example, todate, may be Instead added directly The bleach boosters of the present invention are of the formula MX where M is a member selected from the group consisting of lithium, sodium, potassium, magnesium, calcium, copper, and zinc while the X is halogen. The preferred bleach boosters are the sodium and potassium salts of bromine and iodine, more preferably sodium and potassium bromide and iodide. The present invention comprises bleach boosters that are present such that the mole ratio of bleach to bleach booster is from about 1 0 1 to about 1 2, preferably from about 1 0 2 to about 1.1 i Printed from Mimosa 11 14 30 </div>

Claims

<div class="application article clearfix printTableText" id="claims"> WO 97/20913 PCT/US96/19404 9 EXAMPLES The following compositions are made by mixing the following ingredients 111 the listed proportions The compositions are packaged in tngger-type spray dispensers which are available from Continental Spray International, models T8900® and T8500® Ingredients Sodium Lauxyl sulfate 2 1 - 4 4 05 Sodium Octyl sulfate - - - 2 2 - Lauryl dimethyl amineoxide - w 08 - - 06 LAS - 0 5 - - - - Silicate - - 02 01 01 - Perfume - 01 - 03 03 - Caustic 2 3.2 2 3 3 22 Sulfamic acid 25 35 15 29 29 40 Sodium bromide - 05 03 - 05 08 Hypochlonte IS 20 10 1 7 1.7 3.0 Water and minors up to 100% Ingredient* Sodium Lauryl sulfate 08 . 05 • • 09 Sodium Octyl sulfate - 10 - 08 09 - Lauiyt dimethyl amineoxide - 05 0.5 - 06 - LAS o.s - - 10 - - Silicate - 01 • • 0.2 0.1 Perftune 0.2 - - 0.1 - - Caurtte 1.0 0.9 0.8 11 08 10 Sulfamic add Sodium Bromide - 04 - - - 0.2 Hypochlorite 10 15 10 1.3 16 20 p-tolucnesulphonamide 22 25 - - - - benzenesulfonanude - - 10 16 - - Sodium sulfamate - - - - 25 30 Water and minora up to 100% u /' Printed from Mimosa 1114 30 l) T <ry /% A _ <tc 6 0 ? Una, WO 97/20913 > ' PCT/US96/19404 10 WHAT IS CLAIMED IS 1 A sprayable liquid composition packaged m a spray-type dispenser and comprising a halogen bleach, and an organic or inorganic derived -NH: compound which has the effect of reducing irritation of the respiratory system if spray droplets of said composition are inhaled when the composition is sprayed 2 A composition according to claim 1 which has a pH greater than about 11 n ; \ 3 A composition according to claim 1 or 2 wherein said bleach has the formula M(OX)y where a) M is a member selected from the group consisting of sodium, potassium, magnesium, calcium, and mixtures thereof, b) O is an oxygen atom, and c) X is a member selected from the group consisting of chlorine, bromine, iodine, and mixtures thereof; wherein y is 1 or 2. * <\ i l 4 A composition according to any one ot the preceding claims, comprising from about It 0 01 % to about 10% by weight ol said bleach jj ' V 5. A composition according to any one of the preceding claims, which further comprises a bleach booster which has the formula M(X)V where. ^ &) M is a member selected from the group consisting of lithium, sodium, potassium,' magnesium, calcium, copper, zinc, and mixtures thereof and b) X is a member selected from the group consisting of bromide, hypobromite, bromate, iodine, hypoiodite, iodate, and mixtures thereof whemny is 1 or 2. r ' 6. A composition according to claim 5 whom the molar ratio of bleach to bleach booster is from about I 0 OS to about 1.4. WO 97/20913 PCT/US96/19404 11 7 A composition according to any one of the preceding claims wherein said -NH, compound is a member selected from the group consisting of sulphamic acid, sodium sulphamate, potassium sulphamate sulfamide p-toluenesuphonamide, lmidodisulphonamide benzenesulphonamide, melamine, cyanamide, alkyl sulfonamide, and mixtures thereof 8 A composition according to any one ot the preceding claims which has a viscosity from 1 0 5 to 3000 centipoise at 22°C 9 A composition according to any one of the preceding claims wherein the molar ratio of bleach to said -NH2 compound is trom about 10 1 to about 1 10 10 A composition according to claim 9 wherein the molar ratio of bleach to said -NHj compound is from about 5*1 to about 1 2. 11 A composition according to claim 10 wherein the molar ratio of bleach to said -NH2 compound is from about 3*1 to about I 2. 12 A composition according to any one of the preceding claims which further comprises from 0 1% to 95% by weight ot a detersive surfactant 13. A method for cleaning hard surfaces, said method comprising contacting by spraying a surface in need of cleaning with a cleaning composition according to any one of the preceding claims ' 14. The use of an organic or inorganic denved -NHj compound in a composition comprising a halogen bleach, to 1 educe irritation ot the respiratory system it spray droplets of the composition 0 are inhaled when said composition is sprayed t; M INlCLuCTij/t1 j * I HECEiVE^ 32 6023 12 15 A liquid composition substantially as herein descnbed with reference to any one of the Examples on page 9 lo A composition according to claim 1 and substantially as herem descnbed with reference to any embodiment disclosed n 17 A method according to claim 13 and substantially as herem descnbed with reference to any embodiment disclosed 18 1 The use accordmg to claim 14 and substantially as herein descnbed with reference to any embodiment disclosed / rWfdirCT!!,',! PRO'TITTY CpflC ' | <r',VZ " r , j 6 - JAM s . | : ' L:. pgCEl VED ' j </div>